39 lines
1.4 KiB
YAML
39 lines
1.4 KiB
YAML
title: EfsPotato Named Pipe
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author: Florian Roth
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date: 2021/08/23
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description: Detects the pattern of a pipe name as used by the tool EfsPotato
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detection:
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SELECTION_1:
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EventID: 17
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SELECTION_2:
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EventID: 18
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SELECTION_3:
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PipeName: '*\pipe\\*'
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SELECTION_4:
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PipeName: '*\pipe\srvsvc*'
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condition: ((SELECTION_1 or SELECTION_2) and (SELECTION_3 or SELECTION_4))
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falsepositives:
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- Unknown
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id: 637f689e-b4a5-4a86-be0e-0100a0a33ba2
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level: critical
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logsource:
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category: pipe_created
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definition: Note that you have to configure logging for Named Pipe Events in Sysmon
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config (Event ID 17 and Event ID 18). The basic configuration is in popular
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sysmon configuration (https://github.com/SwiftOnSecurity/sysmon-config), but
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it is worth verifying. You can also use other repo, e.g. https://github.com/Neo23x0/sysmon-config,
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https://github.com/olafhartong/sysmon-modular. How to test detection? You
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can check powershell script from this site https://svch0st.medium.com/guide-to-named-pipes-and-hunting-for-cobalt-strike-pipes-dc46b2c5f575
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product: windows
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references:
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- https://twitter.com/SBousseaden/status/1429530155291193354?s=20
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- https://github.com/zcgonvh/EfsPotato
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status: experimental
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tags:
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- attack.defense_evasion
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- attack.privilege_escalation
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- attack.t1055
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yml_filename: sysmon_efspotato_namedpipe.yml
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yml_path: /Users/user/Documents/YamatoSecurity/sigma/rules/windows/pipe_created
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